A magical effect, "Curse of the Horned Rat," changes the characters appearance to that of a Skaven. This is an activated effect of the Skaven Skin Cloak, an exclusive in-game item available to those who attended one of Games Workshop's Games Days, in North America.

Not that they might not show up sooner rather than later. They are probably putting lots of time into it instead of fixing all the elf manliness issues.